JPH0810375Y2 - Mixing nozzle - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-liquid mixing nozzle, for example, a mixing nozzle suitable for extruding and applying a two-liquid curing type adhesive.

[0002]

2. Description of the Related Art In a conventional multi-liquid mixing nozzle, the inside of one cylinder is isolated in the lengthwise direction, and the liquid agents to be mixed are divided and stored in the individual cylinders, and each liquid is extruded at the same time as extrusion. It is configured to mix. Many proposals have been made for the extrusion mixing method. For example, in the case of a two-cylinder type mixing nozzle, there is known a nozzle for mixing, kneading and discharging two liquids to be extruded by providing a spiral partition inside the nozzle outer cylinder in which the rotation direction is reversed every half rotation. There is. As another mixing nozzle, a plurality of shallow bottomed cylindrical bodies having one or more small holes or slits inside the nozzle outer cylinder are sequentially arranged in the length direction, and these small holes are formed. There is known a nozzle for uniformly mixing, kneading and discharging the two liquids when passing through.

[0003]

[Problems to be Solved by the Invention] However, in the former nozzle, after the two liquids flow through the gap of the spiral partition,
Mixing is repeated by separating into two in the next partition and further into two in the next partition, so that a highly viscous fluid, for example, a two-component curing type adhesive, is in a sufficiently homogeneous state. However, there is a problem that uneven curing of the adhesive due to the imperfect mixing is unavoidable.

The latter nozzle can mix and discharge the two liquids more uniformly than the former, but in the case of a curable adhesive, for example, the liquid mixture in the nozzle gradually cures after use. However, the nozzle becomes stuck and the nozzle cannot be reused. This accumulated amount inside the nozzle not only causes the loss of the adhesive as it is, but it is practically impossible to clean the inside of the mixing chamber and the small hole of the nozzle, so a new nozzle must be used in the next extrusion. Therefore, there is a problem that a large nozzle cost is required to completely use one two-component curing type adhesive.

Therefore, in view of the above problems, the present invention provides a mixing nozzle capable of eliminating the uneven curing of the adhesive during kneading / discharging, reducing the adhesive loss, and reusing the nozzle. It is the one we are trying to provide.

[0006]

The present inventor has developed a highly desirable mixing nozzle as a result of various studies in order to solve the above problems. That is, the present invention includes an outer cylinder that is detachably attached to the tip of a multi-cylinder cylinder,
A split mold piece fitted in the outer cylinder, and a flange projecting inward from the peripheral edge is formed at the tip of the outer cylinder, and the split mold piece has a plurality of multi-liquid mixing chambers. However, these mixing chambers are communicated with each other through a small hole, and the cutting-edge split piece is characterized by a mixing nozzle provided with a discharge portion projecting from a flange of a tip portion of the outer cylinder at the tip thereof. Is.

The present invention will be described in detail below. The mixing nozzle of the present invention comprises an outer cylinder, a mixing chamber fitted into the outer cylinder, and a split piece having a small hole for connecting the mixing chamber. A flange that projects inward is formed, and a hem-shaped portion that spreads outward is formed at the rear end portion, and is detachably attached to the front end portion of the multi-cylinder cylinder. This mounting can be performed by various known methods such as fitting, screwing, and the like. As the outer cylinder, a cylindrical body is usually preferably used, but an elliptic cylinder or other suitable cylindrical body can be arbitrarily selected.

The structure of the split mold constituting the mixing nozzle of the present invention is separated by a plane (particle line) parallel to the long axis of the nozzle so that the mixed liquid retained in the previous use can be easily cleaned. The two members may be integrally formed via a hinge, or one symmetrical member that can be opened and closed may be integrally formed in two folds, or it may be sliced in a plane perpendicular to the long axis of the nozzle. You can also use it. The leading edge split mold piece is provided with an elongated discharge part whose tip projects from the inside of the flange of the tip of the outer cylinder as an integral or individual member, and the split mold piece can be fitted into the outer cylinder. It has an outer shape, and inside thereof, a plurality of mixing chambers for mixing the liquid received from the cylinder are provided in series. The mixing chambers connected to each other are communicated with each other through small holes, and the first mixing chamber is communicated with the hollow portion of the projecting portion. The mixing chamber provided in the split piece is usually 2 to 1
The range of 0, preferably 2 to 5 is practical,
It can be selected according to the kind, number or viscosity of the liquids to be mixed. Further, the mixing chamber is usually preferably formed by a continuous curved surface such as a spherical shape or an ellipsoidal shape, and the presence of a corner portion where the fluid is retained is not preferable.
In addition, the small holes connecting the mixing chambers are preferably preferably circular or elliptical in cross section. For example, in the case of a circular shape, the diameter is 0.5 to 3 mm, preferably about 1 to 1.3 mm, and may be appropriately selected depending on the viscosity of the liquid used.

In the mixing nozzle of the present invention, when a multi-cylinder cylinder is pressed, two or more kinds of liquid agents contained therein are extruded from the tip end thereof and pass through the first small hole. , Is press-fitted into the first mixing chamber, where mixing is done by resistance as it passes through the small holes.
Then, when this mixed liquid is pushed out from the first mixing chamber to the second mixing chamber through the next small hole, the liquid is discharged in a thread-wound state, and the second mixing is performed. Furthermore, the above-mentioned mixed liquid passes through the next small hole from this mixing chamber and is extruded into the third mixing chamber. By repeating this sequence, sufficient mixing is performed, and a homogeneous mixed liquid is discharged from the discharge port. To be done.

The outer cylinder and the split piece which compose the mixing nozzle of the present invention are usually colored members, but these are transparent (transparent or translucent so that the presence or absence of the mixed liquid can be visually recognized). By doing so, the progress of mixing in the piece can be easily observed. The multi-cylinder cylinder used in the present invention is usually a two-cylinder cylinder,
The present invention is not limited to this, and can be applied to all multi-cylinder cylinders.

[0011]

The liquid extruded from the multi-cylinder cylinder into the first mixing chamber through the small holes is mixed in the mixing chamber, passes through the next small hole and is extruded into the second mixing chamber. Is performed. Then, by sequentially repeating this, sufficient mixing is performed, and a homogeneous mixed liquid is discharged from the discharge port.

[0012]

EXAMPLES The present invention will now be described in more detail based on examples. FIG. 1 is a vertical cross-sectional view showing an example of the mixing nozzle of the present invention. The nozzle 1 includes an outer cylinder 2 and a split piece 3.
The outer cylinder 2 is detachably attached to the tip portion 5 of the two-cylinder cylinder 4 that separately contains the two types of liquids A and B. The outer cylinder 2 is a circular member having a circular cross section, which is composed of a flange 6 having a front end projecting inward and a hem-shaped part 7 having a rear end expanding outward, and one symmetric member that can be opened and closed in the outer cylinder 2. The split mold piece 3 which is made into two by folding is inserted via a hinge. The split mold piece 3 has a plurality of mixing chambers 8, 8 ... Formed in its cavity for mixing multiple liquids, and these mixing chambers 8, 8 ...
The discharge part 10 that is communicated with ... And projects from the flange 6 at the tip of the outer cylinder at the tip of the split piece.
Is provided. In this embodiment, when the two-cylinder cylinder 4 is pressed in the direction of the arrow, the two types of liquids A and B contained therein are pushed out from the tip portion 5 of the cylinder 4 and pass through the first small hole 9. Then, they are press-fitted into the first mixing chamber 8, where the two liquids are mixed when passing through the small holes 9. Then, when this mixed liquid is pushed out of the first mixing chamber 8 through the next small hole 9 and into the second mixing chamber 8, the liquid is subjected to the second mixing in a thread-wound state. Further, the mixed liquid is discharged from the second mixing chamber 8 to the next small hole 9
After passing through, the mixture is extruded into the third mixing chamber 8 and sufficiently mixed to form a homogeneous mixed liquid, which is discharged from the discharge unit 10. In addition, when removing the mixed liquid from the previous use,
Remove the outer cylinder from the cylinder for each split mold piece, then remove the outer cylinder, and then open the split mold piece to remove the mixed liquid.

FIG. 2 is a view showing another example of the mixing nozzle of the present invention. FIG. 2 (a) is a longitudinal sectional view thereof, FIG. 2 (b),
2C is an end view perpendicular to the longitudinal direction of the nozzle, and is an end view at the position of line bb and line cc in FIG. 2A. Into the nozzle 1, ring-shaped split pieces 3, 3, ... Are fitted together to form a small hole 9 as a whole.
And spherical spaces are alternately connected to form four spherical mixing chambers 8. 2 (b) is an end view of the formed small hole 9,
FIG. 2C is an end view of the mixing chamber 8. In this figure, the two types of liquids A and B can be more completely mixed by increasing the number of mixing chambers from three to four, and the discharge resistance of the liquid near the small holes can be softened. be able to.

3 to 6 are views showing still another example of the mixing nozzle of the present invention, and FIG. 3 (a) is a longitudinal sectional view thereof, showing three mixing chambers 8 for receiving the liquid extruded from the cylinder.
Are formed. Each small hole 9 communicating with each mixing chamber 8 is formed so that the diameter of the small hole gradually decreases from the cylinder toward the discharge portion. Figure 3 (b),
3 (c), (d), (e), and (f) are shown in FIG.
BB line, cc line, dd line, ee in (a)
It is an end view in the position of a line and f-f line. With such a shape, the liquid passing through the small holes from each mixing chamber is smoothly mixed, so that the discharge resistance near the small holes is also small.

In FIG. 4A, the small hole portion formed through the first mixing chamber 8 and the second mixing chamber 8 is composed of a plurality of pores 11. 4 (b), (c). (D),
(E) and (f) are respectively bb in FIG. 4 (a).
It is an end view in the position of a line, a cc line, a d-d line, an ee line, and an ff line. In FIG. 4D, two small holes 11 are formed in the small hole portion. The smaller the diameter of the pores 11, the better the mixing, but the discharge resistance tends to increase. Therefore, the resistance can be reduced by increasing the number of the pores and increasing the cross-sectional area of the pores 11.

In FIG. 5A, the ring-shaped split pieces 3, 3, ... Are fitted in the nozzle 1 to form six mixing chambers 8. 5 (b), (c),
(D) and (e) are respectively bb in FIG. 5 (a).
It is an expanded end view in the position of a line, a cc line, a dd line, and an ee line. In this figure, as shown in (b), the first small holes 9 are alternately provided with concave-convex passage holes 12 in the lateral direction, and in the second small holes 9, as shown in (d). In addition, the concave-convex passage holes 12 are provided in the reverse arrangement to the first small holes 9. Then, the next small hole 9 is formed by sequentially repeating this nozzle so as to be arranged opposite to the second small hole 9. By arranging the passage holes in reverse for each small hole, the flow direction of the liquid is changed to enhance the mixing effect.

In FIG. 6 (a), the small hole portion is a slit-shaped hole elongated in the lateral direction, and an elongated slit portion 13 is provided in the longitudinal direction at the center of each of the three mixing chambers.
6 (b), (c), (d), (e), and (f) are respectively bb line, cc line, and dd line in FIG. 6 (a).
It is an end view in the position of a line, ee line, and ff line. In this figure, slits are provided in the horizontal direction in FIGS. (B) and (d), and slits are provided in the vertical direction in (c) and (e). By this combination, the flow direction of the liquid is changed similarly to FIG. 5, and the mixing effect is enhanced.

FIG. 7 is a view showing an example of a split mold piece which constitutes the mixing nozzle of the present invention. FIG. 7A is an end view showing the split mold piece, and FIG. 7B shows two split mold pieces. The left side view when combined, (c) is the right side view. The half-piece 3 is formed by folding a single symmetrical member 14 that can be opened and closed into one piece, and is fastened by a boss fitted in a boss hole 15. This is after curing the mixture in the nozzle,
This is because the mixing nozzle can be easily removed, and the split mold piece 3 can be easily removed from the outer cylinder 2 to open the split mold and remove the hardened mass.

[0019]

According to the mixing nozzle of the present invention, since the nozzle can be removed, it is possible to easily remove the lump of the mixed liquid which has hardened in the nozzle and to reduce the loss of the liquid. it can. Therefore, since it can be reused as a mixing nozzle, it is economically very advantageous.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a mixing nozzle of the present invention.

2A and 2B are views showing another example of the mixing nozzle of the present invention, in which FIG. 2A is a longitudinal sectional view thereof, and FIGS. 2B and 2C are vertical to the longitudinal direction of the nozzle. End view, (a)
3 is an end view at the position of line bb and line cc in FIG.

FIG. 3 is a view showing still another example of the mixing nozzle of the present invention, (a) is a longitudinal sectional view thereof, (b), (c),
(D), (e), (f) are end views respectively perpendicular to the longitudinal direction of the nozzle, and are taken along line bb, c in FIG.
It is an end view in the position of -c line, d-d line, ee line, and f-f line.

FIG. 4 is a view showing still another example of the mixing nozzle of the present invention, (a) is a longitudinal sectional view thereof, (b), (c),
(D), (e), (f) are end views respectively perpendicular to the longitudinal direction of the nozzle, and are taken along line bb, c in FIG.
It is an end view in the position of -c line, d-d line, ee line, and f-f line.

FIG. 5 is a view showing still another example of the mixing nozzle of the present invention, in which (a) is a longitudinal sectional view thereof, (b), (c),
(D) and (e) are end views respectively perpendicular to the longitudinal direction of the nozzle, and are the bb line, the cc line, and the cc line in (a).
It is an expanded end view in the position of d-d line and ee line.

FIG. 6 is a view showing still another example of the mixing nozzle of the present invention, (a) is a longitudinal sectional view thereof, (b), (c),
(D), (e), (f) are end views respectively perpendicular to the longitudinal direction of the nozzle, and are taken along line bb, c in FIG.
It is an end view in the position of -c line, d-d line, ee line, and f-f line.

FIG. 7 is a view showing an example of a split mold piece that constitutes the mixing nozzle of the present invention, (a) is an end view showing the split mold piece, and (b) is two split mold pieces. Is a left side view when they are combined, and (c) is a right side view thereof.

[Explanation of symbols]

 1 Mixing Nozzle 2 Outer Cylinder 3 Split Piece 4 Cylinder 5 Cylinder Tip 6 Flange 7 Cuff 8 Mixing Chamber 9 Small Hole 10 Discharge Portion 11 Pore 12 Passage Hole 13 Slit 14 Symmetrical Member 15 Boss Hole.

Claims (1)

[Scope of utility model registration request] 1. A multi-cylinder cylinder comprising an outer cylinder removably mounted on a front end of the multi-cylinder, and a split piece fitted into the outer cylinder. An inwardly projecting flange is formed, the piece has a plurality of multi-liquid mixing chambers, and these mixing chambers are connected by small holes,
The state-of-the-art piece is a mixing nozzle having a tip provided with a discharge portion projecting from a flange at the tip of the outer cylinder.